JESS: Jess and automated DB management
Hi all, Has anyone heard of using Jess as a knowledge base to perform automated database management? By database management I mean, regardless of what's in the database - all the little things like checking accuracy of data, looking for inconsistencies? Then storing any discovered business/process rules as rules in Jess? I know it's a vague question - I'm just exploring this general notion in regards to an organisation. Thanks! Matt -- Matthew Hutchinson Ph.D. CandidateDepartment of Spatial SciencesCurtin University of TechnologyGPO Box U1987Perth, Western Australia 6845Visiting ScholarDepartment of Geography and Planning University of AkronAkron, Ohio USA
RE: JESS: Jess and UML
Could the problem be that UML describes both OO program structures and procedures whereas, with declarative programming, the procedures emerge at runtime? On Wed, 2006-06-21 at 22:49 -0400, Steven Goncalo wrote: Turning the original question inside out, has anyone ever seen a good example of how to describe a rule based system in UML? All of my team's attempts to manually produce a set of UML diagrams to document what the rule based part of our system was doing have been disappointing. The diagrams tended to show how various subsets of the rules might have worked if rephrased as procedures. An automatic round-trip tool between UML and Jess rules would be great, but the first step would be to establish a good mapping between the two domains, which I have not yet seen. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of friedman_hill ernest j Sent: Wednesday, June 21, 2006 10:32 AM To: jess-users@sandia.gov Subject: Re: JESS: Jess and UML I think Matthew J Hutchinson wrote: [Charset iso-8859-1 unsupported, filtering to ASCII...] Is it possible to convert a design in UML into a structure in JESS, using facts? *Everything* is possible -- that's what makes life interesting! Now, the question really is: does a tool which does what you ask already exist? And I think the answer is no. There are tools for converting other kinds of designs into Jess code: ontologies in Protege or OWL, for example. But not UML, to the best of my knowledge. - Ernest Friedman-Hill Advanced Software Research Phone: (925) 294-2154 Sandia National LabsFAX: (925) 294-2234 PO Box 969, MS 9012 [EMAIL PROTECTED] Livermore, CA 94550 http://herzberg.ca.sandia.gov To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: Help on Jess Rules ..plz
Hi John, One more silly question; is CLIPS more advanced than JESS? I see lot of common syntax and features between them. Then why not use CLIPS? Well, apparently there is a CLIPS Tab plugin for Protege http://protege.stanford.edu/plugins/CLIPSTabPages/CLIPS_tab.html , but if you use CLIPS with Protege, you will have to go through JNI since Protege is a Java application. If you are developing in Java, then Jess is you natural choice. Also from some sources, I heard CLIPS is more powerful and portable to various other language. Defending against random hearsay is impossible, so if you have actual statements made about specific Jess performance or functionality issues, let the Jess listserver know, and we'll gladly address them point by point. Cheers, Jason - Morris Technical Solutions LLC www.morristechnicalsolutions.com [EMAIL PROTECTED] phone/fax: 503.692.1088 To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: Help with error
I think Krasnigor, Scott L (N-AST) wrote: I am getting the following exception when trying to do a bsave. It is occurring when the bsave method is executing oss.writeObject(m_rules). I don't understand what could be causing this and am looking for any insight into the issue. I am running Jess version 70b7 from a java application. I will be happy to provide more detail if needed. Thanks. Looks like this is caused by new rules being activated during the call to bsave, presumably because working memory is being modified on another thread. I'm surprised this has never come up before, because thinking of it, it seems that bsave() should probably lock the agenda and working memory while it runs -- but it does not. Thanks for reporting this. Jess reported an error in routine bsave while executing (bsave enginedata). Message: Error during execution. Program text: ( bsave enginedata ) at line 1. at jess.Funcall.execute(Funcall.java:328) at jess.Jesp.parseAndExecuteFuncall(Jesp.java:2261) at jess.Jesp.parseExpression(Jesp.java:436) at jess.Jesp.promptAndParseOneExpression(Jesp.java:291) at jess.Jesp.parse(Jesp.java:270) at jess.Rete.eval(Rete.java:2051) at jess.Rete.eval(Rete.java:2006) at control.Controller.run(Controller.java:67) at java.lang.Thread.run(Unknown Source) Caused by: java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(Unknown Source) at java.util.HashMap$EntryIterator.next(Unknown Source) at java.util.HashMap$EntryIterator.next(Unknown Source) at java.util.HashMap.writeObject(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source) at java.io.ObjectOutputStream.writeSerialData(Unknown Source) at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source) at java.io.ObjectOutputStream.writeObject0(Unknown Source) at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source) at java.io.ObjectOutputStream.writeSerialData(Unknown Source) at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source) at java.io.ObjectOutputStream.writeObject0(Unknown Source) at java.io.ObjectOutputStream.writeObject(Unknown Source) at java.util.TreeMap.writeObject(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source) at java.io.ObjectOutputStream.writeSerialData(Unknown Source) at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source) at java.io.ObjectOutputStream.writeObject0(Unknown Source) at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source) at java.io.ObjectOutputStream.defaultWriteObject(Unknown Source) at java.util.Collections$SynchronizedMap.writeObject(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source) at java.io.ObjectOutputStream.writeSerialData(Unknown Source) at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source) at java.io.ObjectOutputStream.writeObject0(Unknown Source) at java.io.ObjectOutputStream.writeObject(Unknown Source) at jess.Rete.bsave(Rete.java:1768) at jess.Dumper.call(DumpFunctions.java:43) at jess.FunctionHolder.call(FunctionHolder.java:31) at jess.Funcall.execute(Funcall.java:320) ... 8 more Scott L. Krasnigor Principal Engineer/Scientist Advanced Sciences Technologies, LLC. Lockheed Martin - MS2 ' 856-359-3094 * [EMAIL PROTECTED] * 780-1A - Ernest Friedman-Hill Advanced Software Research Phone: (925) 294-2154 Sandia National LabsFAX: (925) 294-2234 PO Box 969, MS 9012 [EMAIL PROTECTED] Livermore, CA 94550 http://herzberg.ca.sandia.gov To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: Jess and automated DB management
On Thu, Jun 22, 2006 at 05:09:40PM +1000, Matthew J Hutchinson wrote: Hi all, Has anyone heard of using Jess as a knowledge base to perform automated database management? By database management I mean, regardless of what's in the database - all the little things like checking accuracy of data, looking for inconsistencies? Then storing any discovered business/process rules as rules in Jess? I know it's a vague question - I'm just exploring this general notion in regards to an organisation. try looking for 'semantic mediation' Holger Wache has written a very intersting PhD thesis in that field. maybe it's not exactly what you are looking for but only what came into MY when reading you question... Ph.D. Candidate Department of Spatial Sciences ..another spontaneous thought: do you happen to know of SFB/TR 8 Spatial Cognition www.sfbtr8.uni-bremen.de gruss mlo -- Dipl.-Ing. Martin Lorenz They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. Benjamin Franklin please encrypt your mail to me GnuPG key-ID: F1AAD37D get it here: http://blackhole.pca.dfn.de:11371/pks/lookup?op=getsearch=0xF1AAD37D ICQ UIN: 33588107 To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
RE: JESS: Help with error
Not a problem. Is there a simple fix I can implement. I am trying to prototype a failover capability and I am dead in the water without the bsave/bload functionality working. I have the source code. I will be happy to figure out a temporary fix if you can just point me in the right direction. Thanks. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of friedman_hill ernest j Sent: Thursday, June 22, 2006 9:43 AM To: jess-users@sandia.gov Subject: Re: JESS: Help with error I think Krasnigor, Scott L (N-AST) wrote: I am getting the following exception when trying to do a bsave. It is occurring when the bsave method is executing oss.writeObject(m_rules). I don't understand what could be causing this and am looking for any insight into the issue. I am running Jess version 70b7 from a java application. I will be happy to provide more detail if needed. Thanks. Looks like this is caused by new rules being activated during the call to bsave, presumably because working memory is being modified on another thread. I'm surprised this has never come up before, because thinking of it, it seems that bsave() should probably lock the agenda and working memory while it runs -- but it does not. Thanks for reporting this. Jess reported an error in routine bsave while executing (bsave enginedata). Message: Error during execution. Program text: ( bsave enginedata ) at line 1. at jess.Funcall.execute(Funcall.java:328) at jess.Jesp.parseAndExecuteFuncall(Jesp.java:2261) at jess.Jesp.parseExpression(Jesp.java:436) at jess.Jesp.promptAndParseOneExpression(Jesp.java:291) at jess.Jesp.parse(Jesp.java:270) at jess.Rete.eval(Rete.java:2051) at jess.Rete.eval(Rete.java:2006) at control.Controller.run(Controller.java:67) at java.lang.Thread.run(Unknown Source) Caused by: java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(Unknown Source) at java.util.HashMap$EntryIterator.next(Unknown Source) at java.util.HashMap$EntryIterator.next(Unknown Source) at java.util.HashMap.writeObject(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source) at java.io.ObjectOutputStream.writeSerialData(Unknown Source) at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source) at java.io.ObjectOutputStream.writeObject0(Unknown Source) at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source) at java.io.ObjectOutputStream.writeSerialData(Unknown Source) at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source) at java.io.ObjectOutputStream.writeObject0(Unknown Source) at java.io.ObjectOutputStream.writeObject(Unknown Source) at java.util.TreeMap.writeObject(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source) at java.io.ObjectOutputStream.writeSerialData(Unknown Source) at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source) at java.io.ObjectOutputStream.writeObject0(Unknown Source) at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source) at java.io.ObjectOutputStream.defaultWriteObject(Unknown Source) at java.util.Collections$SynchronizedMap.writeObject(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source) at java.io.ObjectOutputStream.writeSerialData(Unknown Source) at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source) at java.io.ObjectOutputStream.writeObject0(Unknown Source) at java.io.ObjectOutputStream.writeObject(Unknown Source) at jess.Rete.bsave(Rete.java:1768) at jess.Dumper.call(DumpFunctions.java:43) at jess.FunctionHolder.call(FunctionHolder.java:31) at jess.Funcall.execute(Funcall.java:320) ... 8 more Scott L. Krasnigor Principal Engineer/Scientist Advanced Sciences Technologies, LLC. Lockheed Martin - MS2 ' 856-359-3094 * [EMAIL PROTECTED] * 780-1A - Ernest
Re: JESS: Help with error
I think Krasnigor, Scott L (N-AST) wrote:
Not a problem. Is there a simple fix I can implement. I am trying to
prototype a failover capability and I am dead in the water without the
bsave/bload functionality working. I have the source code. I will be
happy to figure out a temporary fix if you can just point me in the
right direction. Thanks.
I am thinking of something like this (jess/Rete.java. around like 1800):
public void bsave(OutputStream os) throws IOException {
ObjectOutputStream oos = new ObjectOutputStream(os);
synchronized (getActivationSemaphore()) {
synchronized (getCompiler()) {
oos.writeObject(m_globalContext);
...
The order of the two nested locks is, of course, significant.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of friedman_hill ernest j
Sent: Thursday, June 22, 2006 9:43 AM
To: jess-users@sandia.gov
Subject: Re: JESS: Help with error
I think Krasnigor, Scott L (N-AST) wrote:
I am getting the following exception when trying to do a bsave. It is
occurring when the bsave method is executing oss.writeObject(m_rules).
I don't understand what could be causing this and am looking for any
insight into the issue. I am running Jess version 70b7 from a java
application. I will be happy to provide more detail if needed. Thanks.
Looks like this is caused by new rules being activated during the call
to bsave, presumably because working memory is being modified on
another thread. I'm surprised this has never come up before, because
thinking of it, it seems that bsave() should probably lock the agenda
and working memory while it runs -- but it does not. Thanks for
reporting this.
Jess reported an error in routine bsave
while executing (bsave enginedata).
Message: Error during execution.
Program text: ( bsave enginedata ) at line 1.
at jess.Funcall.execute(Funcall.java:328)
at jess.Jesp.parseAndExecuteFuncall(Jesp.java:2261)
at jess.Jesp.parseExpression(Jesp.java:436)
at jess.Jesp.promptAndParseOneExpression(Jesp.java:291)
at jess.Jesp.parse(Jesp.java:270)
at jess.Rete.eval(Rete.java:2051)
at jess.Rete.eval(Rete.java:2006)
at control.Controller.run(Controller.java:67)
at java.lang.Thread.run(Unknown Source) Caused by:
java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
at java.util.HashMap$EntryIterator.next(Unknown Source)
at java.util.HashMap$EntryIterator.next(Unknown Source)
at java.util.HashMap.writeObject(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown
Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown
Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)
at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown
Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.writeObject(Unknown Source)
at java.util.TreeMap.writeObject(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown
Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown
Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)
at java.io.ObjectOutputStream.defaultWriteObject(Unknown Source)
at java.util.Collections$SynchronizedMap.writeObject(Unknown
Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown
Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown
Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.writeObject(Unknown
JESS: SWRL built-ins
Hi,Does Jess support reasoning with SWRL built-ins? What I am trying to do is something like the following: I have a class Person with Datatype property hasAge (integer) and I want to have a class AdultPerson, being a person with age more than 18. From what I know, it is not possible to do this in OWL with a defined class. So I have written the following rule in SWRL: Person(?x) /\ hasAge(?x, ?y) /\ swrlb:greaterThan(?y, 18) → AdultPerson(?x)However Jess does not seem to classify the individuals.I am using the SWRL tab in Protege.Could someone please clarify this issue or correct me if I am wrong in something? Thank you in advance.Dimitris
Re: JESS: Jess and automated DB management
Thanks for both those pieces of information! :-) On 6/22/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: On Thu, Jun 22, 2006 at 05:09:40PM +1000, Matthew J Hutchinson wrote: Hi all, Has anyone heard of using Jess as a knowledge base to perform automated database management? By database management I mean, regardless of what's in the database - all the little things like checking accuracy of data, looking for inconsistencies? Then storing any discovered business/process rules as rules in Jess? I know it's a vague question - I'm just exploring this general notion in regards to an organisation.try looking for 'semantic mediation'Holger Wache has written a very intersting PhD thesis in that field. maybe it's not exactly what you are looking for but only what came into MYwhen reading you question... Ph.D. Candidate Department of Spatial Sciences..another spontaneous thought:do you happen to know of SFB/TR 8 Spatial Cognition www.sfbtr8.uni-bremen.degrussmlo--Dipl.-Ing. Martin Lorenz They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.Benjamin Franklinplease encrypt your mail to meGnuPG key-ID: F1AAD37Dget it here: http://blackhole.pca.dfn.de:11371/pks/lookup?op=getsearch=0xF1AAD37DICQ UIN: 33588107To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'in the BODY of a message to [EMAIL PROTECTED], NOT to the list(use your own address!) List problems? Notify [EMAIL PROTECTED].-- Matthew Hutchinson Ph.D. CandidateDepartment of Spatial Sciences Curtin University of TechnologyGPO Box U1987Perth, Western Australia 6845Visiting ScholarDepartment of Geography and PlanningUniversity of AkronAkron, Ohio USA
Re: JESS: Help on Jess Rules ..plz
Hi John, Jason, this thread seems to go in different directions with issues that I'm trying to sort out: 1. What is the best set of tools and languages for John. This requires some more background information of what you are trying to achieve. On Jun 21, 2006, at 11:41 PM, Jason Morris wrote: Hi John, One more silly question; is CLIPS more advanced than JESS? I see lot of common syntax and features between them. Then why not use CLIPS? Well, apparently there is a CLIPS Tab plugin for Protege http://protege.stanford.edu/plugins/CLIPSTabPages/CLIPS_tab.html , but if you use CLIPS with Protege, you will have to go through JNI since Protege is a Java application. If you are developing in Java, then Jess is you natural choice. Also from some sources, I heard CLIPS is more powerful and portable to various other language. Defending against random hearsay is impossible, so if you have actual statements made about specific Jess performance or functionality issues, let the Jess listserver know, and we'll gladly address them point by point. Cheers, Jason 2. Combination of Jess / JessTab / Protege for John's specific example. I'll stumbled across something when I played with John's example, so I'll post that in a different mail. 3. Possible improvement of Jess / JessTab / Protege integration. This is a more fundamental question, and this discussion should not be led without Henrik Errikson, the developer of JessTab. While I'd be very interested in learning more about the integration and its design. However, given my current knowledge and experience, I wouldn't dare to touch JessTab itself. I consider myself a user of Jess / JessTab / Protege as a set of tools, and I'll gladly contribute my input from that perspective. Dona Begin forwarded message: From: Jason Morris [EMAIL PROTECTED] Date: June 21, 2006 5:25:58 PM CDT To: jess-users@sandia.gov, [EMAIL PROTECTED] Subject: Re: JESS: Help on Jess Rules ..plz Reply-To: jess-users@sandia.gov Hi Dona, I apologize for barging in. I'm just guessing that John might be using Jess in combination with Protégé Ernest has a point that Jess Tab is generating nasty Jess code. If Jess Tab is to really play well with Jess proper, perhaps somebody from the Jess camp should volunteer to help out. I've been lurking on the Protégé listserver for about a year now, and I'm fairly active in the Jess community. Let me know what I can do to help since I'm interested in learning more about Protege and Jess Tab. Cheers, Jason Morris Co-moderator Jess Listserver/Wiki Dona To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
Matching multislots with JessTab/ Protege [was: JESS: Help on Jess Rules ..plz]
Hi John, I was trying to reproduce John's small example and I was convinced that matching multislots with Protege is possible. I used the model described by John (see below). I created 4 Instances of Hello with Resource\ ID 1 through 4 I created 3 Instances of Node\ Spoof: Behavior\ ID A Resource sequence (1 3 4) Behavior\ ID B Resource sequence (2 3) Behavior\ ID C Resource sequence (1 2 3 4) These are all mapped Protege instances, so the multislot resource sequence is actually a list of Protege intstances. For example, the fact for the instance with Behavior\ ID A looks like this: (MAIN::object (is-a Node Spoof) (is-a-name Node Spoof) (OBJECT Java-Object:edu.stanford.smi.protege.model.DefaultSimpleInstance) (Resource sequence Java-Object:edu.stanford.smi.protege.model.DefaultSimpleInstance Java-Object:edu.stanford.smi.protege.model.DefaultSimpleInstance Java-Object:edu.stanford.smi.protege.model.DefaultSimpleInstance) (Behavior ID A)) I simplified the rule just to match multislots with instances, and I tried 2 alternatives, one with return value constraint and one with the multifield. For each test, I bind a Protege instance to a global variable that I use in the rules. ;; ;;Example with return value constraint cf. JiA p. 106 ;; Hello with Resource ID 1 is in Node Spoof A and C ;; (defglobal ?*a* = (nth$ 1 (find-instance ((?h Hello)) (eq (slot-get ?h Resource\ ID) 1 (defrule testnest3 ?r2 - (MAIN::object (is-a Node\ Spoof) (Resource\ sequence $?r:(member$ ?*a* $?r))) = (printout t Node (slot-get ?r2 Behavior\ ID) crlf)) ;; ;;Example with multifields JiA p. 103 ;; Hello with Resource ID 2 is in Node Spoof B and C ;; (defglobal ?*b* = (nth$ 1 (find-instance ((?h Hello)) (eq (slot-get ?h Resource\ ID) 2 (defrule testnest4 ?r2 - (MAIN::object (is-a Node\ Spoof) (Resource\ sequence $?before ?*b* $?after)) = (printout t Node (slot-get ?r2 Behavior\ ID) crlf)) The rules match properly and fire, but I do get error messages in both cases: Jess (defrule testnest3 ?r2 - (MAIN::object (is-a Node\ Spoof) (Resource\ sequence $?r:(member$ ?*a* $?r))) = (printout t Node (slot-get ?r2 Behavior\ ID) crlf)) == Activation: MAIN::testnest3 : f-4 == Activation: MAIN::testnest3 : f-6 Jess reported an error in routine ValueVector.set while executing rule LHS (TECT). Message: Bad index 5 in call to set() on this vector: (MAIN::object (is-a Hello) (is-a-name Hello) (OBJECT Java-Object:edu.stanford.smi.protege.model.DefaultSimpleInstance) (Neighbor Address rst uvw xyz) (Resource ID 4)). Program text: ( defrule testnest3 ?r2 - ( MAIN::object ( is-a Node Spoof ) ( Resource sequence $?r : ( member$ ?*a* $?r ) ) ) = ( printout t Node ( slot-get ?r2 Behavior ID ) crlf ) ) at line 7. Jess (run) FIRE 1 MAIN::testnest3 f-6 NodeC FIRE 2 MAIN::testnest3 f-4 NodeA 2 Jess (defrule testnest4 ?r2 - (MAIN::object (is-a Node\ Spoof) (Resource\ sequence $?before ?*b* $?after)) = (printout t Node (slot-get ?r2 Behavior\ ID) crlf)) == Activation: MAIN::testnest4 : f-5 == Activation: MAIN::testnest4 : f-6 Jess reported an error in routine ValueVector.set while executing rule LHS (TECT). Message: Bad index 5 in call to set() on this vector: (MAIN::object (is-a Hello) (is-a-name Hello) (OBJECT Java-Object:edu.stanford.smi.protege.model.DefaultSimpleInstance) (Neighbor Address rst uvw xyz) (Resource ID 4)). Program text: ( defrule testnest4 ?r2 - ( MAIN::object ( is-a Node Spoof ) ( Resource sequence $?before ?*b* $?after ) ) = ( printout t Node ( slot-get ?r2 Behavior ID ) crlf ) ) at line 9. Jess (run) FIRE 1 MAIN::testnest4 f-6 NodeC FIRE 2 MAIN::testnest4 f-5 NodeB 2 While Jess is still able to fire the rules correctly, it is about the last thing it does before Protege hangs. Any idea what is going on here? I'm using Protege 3.1.1 Build 216, JessTab 1.4, Jess 7.0b4 on Mac OS X 10.3.9 Thanks in advance for any hints Dona P.S.: I'll gladly send the Protege project to anyone interested. On Jun 21, 2006, at 9:01 PM, John wrote: first, thx for Dona Jason for their valuable comments. Yes, Dona, your guess is right. I am using protege in combo with Jess. I see protege is more powerful if you combine the Jess features. As Dona have accurately guessed, I used JessTab to map instances and classes created in protege to Jess. Jason, Assert(ion) in Jess(with protoge) is done by a GUI interface (Form based). The problem is that the object variable (for the multislots) is a single instance address and doesnt contain the actual contents. As of the contents of the Hello and Node Spoof class; Hello class contain two slots: Resource ID and Neighbor Address(multislot type string) Node Spoof: Behavior ID (string) and Resouce sequence (multislot
